Air purifier unit



FIG. 1 is a top, front, right side perspective view of an air purifier unit showing my new design;

FIG. 2 is a front elevational view thereof drawn to a larger scale than to FIG. 1;

FIG. 3 is a left side elevational view thereof drawn to a scale larger than that of FIG. 1 but smaller than that of FIG. 2, the right side being a mirror image;

FIG. 4 is a rear elevational view thereof drawn to the scale of FIG. 3;

FIG. 5 is a top plan view thereof drawn to the scale of FIG. 3; and,

FIG. 6 is a bottom plan view thereof drawn to the scale of FIG. 3. 

The ornamental design for an air purifier unit, as shown and described. 